/// <summary>
/// Export formatted spotlight picture as a new picture,
/// then use the new pic to replace the formatted one.
/// Thus when it's displayed, no need to render the effect (which's very slow)
/// </summary>
/// <param name="spotlightPicture"></param>
private void RenderSpotlightPicture(PowerPoint.Shape spotlightPicture)
{
string dirOfRenderedPicture = Path.GetTempPath() + @"\rendered_" + spotlightPicture.Name;
//Render process:
//export formatted spotlight picture to a temp folder
spotlightPicture.Export(dirOfRenderedPicture, PowerPoint.PpShapeFormat.ppShapeFormatPNG);
//then add the exported new picture back
var renderedPicture = PowerPointCurrentPresentationInfo.CurrentSlide.Shapes.AddPicture(
dirOfRenderedPicture, Office.MsoTriState.msoFalse, Office.MsoTriState.msoTrue,
spotlightPicture.Left, spotlightPicture.Top, spotlightPicture.Width, spotlightPicture.Height);
renderedPicture.Name = spotlightPicture.Name + "_rendered";
spotlightPicture.Delete();
}
/// <summary>
/// Create a slide model from a powerpoint slide
/// </summary>
/// <param name="pageSetup"></param>
/// <param name="pptpm"></param>
/// <param name="deck"></param>
/// <param name="tempFileCollection"></param>
/// <param name="dirpath"></param>
/// <param name="currentSlide"></param>
/// <returns></returns>
private static SlideModel CreateSlide(PowerPoint.PageSetup pageSetup, PPTPaneManagement.PPTPaneManager pptpm, DeckModel deck, TempFileCollection tempFileCollection, string dirpath, PowerPoint._Slide currentSlide)
{
int slideWidth = (int)pageSetup.SlideWidth; //Standard = 720 => 6000
int slideHeight = (int)pageSetup.SlideHeight; //Standard = 540 => 4500
float emfWidth = slideWidth * 25 / 3;
float emfHeight = slideHeight * 25 / 3;
// Adding an empty textbox in the upper left corner of the the
// slide before layers are exported works around a common
// issue with shape positioning. Without this, text shapes often get pushed too far
// to the right and down due to some extra padding that PPT inserts on
// the top and left of the exported images. It doesn't pad the top left of an
// empty text box, so the positioning is corrected.
// This isn't perfect since the workaround should probably be applied to
// every layer with text boxes.
currentSlide.Shapes.AddTextbox(Core.MsoTextOrientation.msoTextOrientationHorizontal, 0, 0, 1, 1);
PowerPoint.Shapes currentShapes = currentSlide.Shapes;
List<TaggedShape> taggedShapeList = PPTDeckIO.BuildTaggedShapeList(currentShapes, pptpm);
//Create a new SlideModel
SlideModel newSlideModel = new SlideModel(Guid.NewGuid(), new LocalId(), SlideDisposition.Empty, new Rectangle(0, 0, slideWidth, slideHeight));
//Lock it
using (Synchronizer.Lock(newSlideModel.SyncRoot)) {
//Set the slide's title
newSlideModel.Title = PPTDeckIO.FindSlideTitle(taggedShapeList, currentSlide);
PPTDeckIO.MakeShapesInvisible(currentShapes);
//Create the Background image
//Generate a new filename
string filename = PPTDeckIO.GenerateFilename();
bool bitmapMode = true;
if (bitmapMode) {
filename = dirpath + "\\" + filename + ".png";
currentSlide.Export(filename, "PNG", 0, 0);
// Need to also export as EMF to get the size of the slide in inches
currentSlide.Export(filename + "_TEMP", "EMF", 0, 0);
tempFileCollection.AddFile( filename + "_TEMP", false );
}
else {
filename = dirpath + "\\" + filename + ".emf";
currentSlide.Export(filename, "EMF", 0, 0);
}
tempFileCollection.AddFile(filename, false);
//Compute the MD5 of the BG
FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read);
MD5 md5Provider = new MD5CryptoServiceProvider();
byte[] md5 = md5Provider.ComputeHash(fs);
fs.Seek(0, SeekOrigin.Begin);
Image image = Image.FromStream(fs);
if (bitmapMode) {
image = DisassociateBitmap(image);
}
fs.Close();
// Open the EMF version if we used a bitmap to get the conversion
if( bitmapMode ) {
FileStream fsEMF = new FileStream( filename + "_TEMP", FileMode.Open, FileAccess.Read );
Image image_emf = Image.FromStream( fsEMF );
emfWidth = image_emf.Width;
emfHeight = image_emf.Height;
fsEMF.Close();
image_emf.Dispose();
} else {
emfWidth = image.Width;
emfHeight = image.Height;
}
//Create the ImageSheet
ImageSheetModel sheet = new ImageSheetModel(deck, Guid.NewGuid(), Model.Presentation.SheetDisposition.Background,
new Rectangle(0, 0, slideWidth, slideHeight), (ByteArray)md5, 1);
//Add the ImageSheet to the Slide
newSlideModel.ContentSheets.Add(sheet);
//Add the Image+MD5 to the deck
deck.AddSlideContent((ByteArray)md5, image);
// Restore visibility - this makes everything visible - a bug?
PPTDeckIO.MakeShapesVisible(currentShapes);
List<List<TaggedShape>> layerList = PPTDeckIO.SeparateIntoLayers(taggedShapeList);
int startHeight = 2;
foreach (List<TaggedShape> layer in layerList)
PPTDeckIO.ProcessLayer( layer, tempFileCollection, currentShapes, deck, newSlideModel,
slideWidth/emfWidth, slideHeight/emfHeight, startHeight++ );
//Add SlideModel to the deck
deck.InsertSlide(newSlideModel);
}
return newSlideModel;
}
/// <summary>
/// Create a slide model from a powerpoint slide
/// </summary>
/// <param name="pageSetup"></param>
/// <param name="pptpm"></param>
/// <param name="deck"></param>
/// <param name="tempFileCollection"></param>
/// <param name="dirpath"></param>
/// <param name="currentSlide"></param>
/// <returns></returns>
private static SlideModel CreateSlide(PowerPoint.PageSetup pageSetup, PPTPaneManagement.PPTPaneManager pptpm, DeckModel deck, TempFileCollection tempFileCollection, string dirpath, PowerPoint._Slide currentSlide)
{
int slideWidth = (int)pageSetup.SlideWidth; //Standard = 720 => 6000
int slideHeight = (int)pageSetup.SlideHeight; //Standard = 540 => 4500
float emfWidth = slideWidth * 25 / 3;
float emfHeight = slideHeight * 25 / 3;
PowerPoint.Shapes currentShapes = currentSlide.Shapes;
List<TaggedShape> taggedShapeList = PPTDeckIO.BuildTaggedShapeList(currentShapes, pptpm);
//Create a new SlideModel
SlideModel newSlideModel = new SlideModel(Guid.NewGuid(), new LocalId(), SlideDisposition.Empty, new Rectangle(0, 0, slideWidth, slideHeight));
//Lock it
using (Synchronizer.Lock(newSlideModel.SyncRoot)) {
//Set the slide's title
newSlideModel.Title = PPTDeckIO.FindSlideTitle(taggedShapeList);
PPTDeckIO.MakeShapesInvisible(currentShapes);
//Create the Background image
//Generate a new filename
string filename = PPTDeckIO.GenerateFilename();
bool bitmapMode = true;
if (bitmapMode) {
filename = dirpath + "\\" + filename + ".JPG";
currentSlide.Export(filename, "JPG", 0, 0);
// Need to also export as EMF to get the size of the slide in inches
currentSlide.Export(filename + "_TEMP", "EMF", 0, 0);
tempFileCollection.AddFile( filename + "_TEMP", false );
}
else {
filename = dirpath + "\\" + filename + ".emf";
currentSlide.Export(filename, "EMF", 0, 0);
}
tempFileCollection.AddFile(filename, false);
//Compute the MD5 of the BG
FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read);
MD5 md5Provider = new MD5CryptoServiceProvider();
byte[] md5 = md5Provider.ComputeHash(fs);
fs.Seek(0, SeekOrigin.Begin);
Image image = Image.FromStream(fs);
if (bitmapMode) {
image = DisassociateBitmap(image);
}
fs.Close();
// Open the EMF version if we used a bitmap to get the conversion
if( bitmapMode ) {
FileStream fsEMF = new FileStream( filename + "_TEMP", FileMode.Open, FileAccess.Read );
Image image_emf = Image.FromStream( fsEMF );
emfWidth = image_emf.Width;
emfHeight = image_emf.Height;
fsEMF.Close();
image_emf.Dispose();
} else {
emfWidth = image.Width;
emfHeight = image.Height;
}
//Create the ImageSheet
ImageSheetModel sheet = new ImageSheetModel(deck, Guid.NewGuid(), Model.Presentation.SheetDisposition.Background,
new Rectangle(0, 0, slideWidth, slideHeight), (ByteArray)md5, 1);
//Add the ImageSheet to the Slide
newSlideModel.ContentSheets.Add(sheet);
//Add the Image+MD5 to the deck
deck.AddSlideContent((ByteArray)md5, image);
// Restore visibility - this makes everything visible - a bug?
PPTDeckIO.MakeShapesVisible(currentShapes);
List<List<TaggedShape>> layerList = PPTDeckIO.SeparateIntoLayers(taggedShapeList);
int startHeight = 2;
foreach (List<TaggedShape> layer in layerList)
PPTDeckIO.ProcessLayer( layer, tempFileCollection, currentShapes, deck, newSlideModel,
slideWidth/emfWidth, slideHeight/emfHeight, startHeight++ );
//Add SlideModel to the deck
deck.InsertSlide(newSlideModel);
}
return newSlideModel;
}
private Image ConstructSlideImage(PowerPoint._Slide ppSlide,
string imageFileName, string imageFormatString, int imageWidth, int imageHeight, ref int errorCount)
{
// Converting slide formats is done through exporting to a file and reading in
ppSlide.Export(imageFileName, imageFormatString, imageWidth, imageHeight);
Image image = Image.FromFile(imageFileName);
long size1 = ImageSize(image);
if (size1 <= SlideSizeCutoff(this.MaximumImageSize))
return image;
// Bitmap was too big, so let's make a low res version
errorCount++;
Size compressedSize = CompressedImageSize(this.MaximumImageSize, imageWidth, imageHeight);
ppSlide.Export(imageFileName + "x.png", ".png", compressedSize.Width, compressedSize.Height);
Bitmap bitmap2 = new Bitmap(imageFileName + "x.png");
long size2 = ImageSize(bitmap2);
return bitmap2;
}
/// <summary>
/// Export a slide to the specified image format
/// </summary>
/// <param name="slide">PPT.Slide object instance</param>
/// <param name="filePathAndName">File and Path name for the export target</param>
/// <param name="exportFormat">Format to export to</param>
/// <param name="scaleWidth">Scale with of the image</param>
/// <param name="scaleHeight">Scale height of the image</param>
public void Export(
PPT.Slide slide,
string filePathAndName,
ImageFormats.Formats exportFormat,
int scaleWidth = 1280,
int scaleHeight = 1024)
{
slide.Export(filePathAndName, exportFormat.ToString(), scaleWidth, scaleHeight);
}